feat: only seed example data when database is empty

Author: bethesque

lib/pact_broker/db/seed_example_data.rb

@@ -1,4 +1,5 @@
 require 'pact_broker/test/test_data_builder'
+require 'pact_broker/pacticipants/service'
 
 module PactBroker
   module DB
@@ -8,6 +9,7 @@ def self.call
       end
 
       def call
+        return unless database_empty?
         PactBroker::Test::TestDataBuilder.new
           .create_consumer("Example App", created_at: days_ago(16))
           .create_provider("Example API", created_at: days_ago(16))
@@ -30,6 +32,10 @@ def call
           .create_provider_version_tag("dev", created_at: days_ago(1))
       end
 
+      def database_empty?
+        PactBroker::Pacticipants::Service.find_all_pacticipants.empty?
+      end
+
       def pact_1
         seed_data_file("pact_1.json")
       end